<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
</body>
<script>
    //    var show = function (n1,n2) {
    //        return n1+n2;
    //    }
    //    alert(show(2,3));

//    var v =(n1,n2)=>n1+n2;
//    alert(v(2,3));

//    var v =(n1,n2)=>{return n1+n2};
//    alert(v(2,3));

//    var  f =()=>{alert("aaa")}
//f();
</script>
</html>